Hermione and the heir of Slytherin

I started this as fanart for a fanfic, but after reading it a little further I saw that it really wasn't going to work. I still liked the concept design so much though that I went ahead and finished drawing it. It's supposed to be Hermione and her alter ego the heir of Slytherin in a sort of power struggle. If I ever color it the inside of the skull will be glowing green except for right near Hermiones fingers and down the scar shaped crack where it will be red.